Deck General · PFDs & Immersion Suits
An immersion suit (survival suit) is designed primarily to protect a person in cold water by:
- AProviding sufficient buoyancy to keep the head above water only
- BInsulating the body to slow heat loss and delay hypothermia✓ Correct
- CSupplying oxygen from a built-in tank for up to 10 minutes
- DSignaling rescuers with an automatic strobe light
Explanation
An immersion suit insulates the wearer against the cold by trapping a thin layer of water that warms to body temperature and minimizing convective heat loss. It also provides buoyancy and visibility (typically bright orange color), but its primary function is thermal protection.
Authority: SOLAS
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